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Full text of "The Cambridge Natural History"

ANATOMY OF PIGS

275

can and does attack and destroy human beings. The Hippo-
potamus not only swims, but can walk along the bottom of a
river with great rapidity. It occasionally puts out to sea from
the months of rivers frequented by it; and it is supposed that in
this way Madagascar was populated with Hippopotamuses, whose
remains are now found In swamps In that island.

Fam. 2.   Sllidae.---The Fig family, Suidae, differ from the last

In their smaller size, In the terminal nostrils and mobile snout,
which Is not grooved, except faintly as in J&abirusa. They are
generally hairy, but the Babvroussa is an exception, while JPhaco-



141. — Wild Hour.

scrq/a.     x

choerus is but slightly haired. Though there are four digits* as
In the Hippopotamus, only i>wo reaeli the ground in walking.
The stomach, furthermore, Is simple, and. (except In jDivotyles) there
Is a caecum. The kidneys are smooth, and the liver Is more
lobate than In Hippopotamus. The orbital cavity Is confluent
with the temporal fossa. The typical genus, Łus, is distributed
over Europe, Asia, and the Islands of the Malay Archipelago,
reaching as far as Borneo and Celebes. The dentition1 Is
complete. A single species, the so-called 8. sennaariensis, Is
from Ethiopian Africa, but it Is not certain how far this animal
may be an escaped species introduced by man. A very large
number of " species " of j&us have been described^ but Dr. Forsyth
1 There is, however, some doubt about the first premolars,